When it comes to testing a power supply, there are a lot of choices in how to tackle the job. I have found that while a multimeter can give scads of data, most of us don't have a clue what all these facts and figures mean. Even the elite of the enthusiast crowd doesn't always keep up with the inner workings of a power supply. So what do we do?

Since a majority of our readers tend to fall into the enthusiast realm, why not run the power supply in an Athlon64 based system and then stress it out? After we get things worked up nicely by running 3DMark loops and burning CD disks, we'll take a reading of the power levels right in the middle of this mess. This ought to give us a workable answer as to whether or not this product can give us the power we need under stressful conditions. If it can give solid results under this type of operating condition, it will let us know that it can handle the regular chores that we are likely to throw at it.

All right then, the processor is running at 1.55v, the memory is at 2.8v and the AGP is at default. The system is a powerhouse and the video card is known to cause weaker power supplies to cringe in terror. Add the stress factors mentioned above and we should get a fair look at what this PSU is capable of.

As a final note, most manufacturers claim a leeway of +/- 5% of any given output level. Using this as a common ground, we should end up with rail voltage levels of 3.135-3.465v on the 3.3v rail, 4.75-5.25v on the 5v rail and 11.4-12.6v on the 12v rail. Keep this in mind when we go through the numbers below. Higher values can be beneficial, lower values bear watching.

Even under heavy stress, the XClio unit performs very well. All voltage rails show values above factory standards, so this shows a lot of promise for those who are looking at overclocking and voltage mods to their components. You should have no problems at all with providing ample power to all areas of the system.

It also needs to be noted that the power was very stable during testing. It isn't uncommon for power levels to fluctuate a bit when keeping the probes attached to the system, but there was very little movement of the power levels with this unit. Very good job here!